Solved by Expert Tutors
Solved by Expert Tutors
Question

a. Assume a online test has 15 multiple questions. Each question has

five possible answers, of which only one is correct.
i. What is the probability that guesswork will yield at least seven correct answers? (2 marks)
ii. What is the expected number of correct answers by guesswork? (2 marks) 


b. At Delta limited the Chief Administrative Manager analyzed the number of incoming faxes. After an analysis, the manager determined the probability distribution of the number of pages per fax as follows:
x 1 2 3 4 5 6 7
P(x) 0.05 0.12 0.2 0.3 0.15 0.1 0.08


Required: Compute the mean and the variance of the number of pages per fax. (6 marks)

Step-by-step answer

usc

m risus ante, dapibus a mole

gue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem i

usc

m ipsum d

ec facilisis. Pell

trices ac magna. Fusce dui

acinia pulvi

tri

nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibu

e vel laoreet ac, dic

ctum vitae odio. Donec aliquet. Lorem ipsum dolor sit ame

e vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum

entesque dapibus efficitur laoreet. Nam

usce dui lectus, congue vel

s a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dict

ctu

, consectetur adipiscing elit. Nam lacinia pulvinar tort

rem ipsum dolor sit amet, cons

ng elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapi

dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam lacinia pulvinar tortor nec facilisis. Pellentesque dapibus efficitur laoreet. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Donec aliquet. Lorem ipsum dolor sit amet, consecte

, dictum

itur laoreet. Nam risus ante, dapibus a

s a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dict

molestie consequa

llen

lestie consequat, ultrices ac magna. Fusce dui lectus,

m risus ante, dapibus

ur laoreet. Nam

ctu

congue vel laoreet ac, dictum vitae odio. Donec aliquet

s a molestie consequat, ultrices ac magna. Fusce dui lectus, congue vel laoreet ac, dict

usc

TABLE.JPG

ia pulvinar

a molestie conseq

amet, consectetur adipiscing el

trices ac magna. Fusce dui lectus, congue ve

lestie consequat, ultrices ac

risus ante, dapibus a molestie consequa

trices ac magna. Fusce dui lectus, cong

TABLE.JPG
r

Subscribe to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question